I got it to change the icon and the 'window' name for my exe, but in the task manager it still shows up as Godot Engine Editor.

You mean for an exported game, or for the Godot editor?

For an exported Godot project, I do not believe there is any way to actually change the name of the application itself. The Godot exports are actually just pre-built instances of the Godot game engine, and it loads the exported .pck when launched, which tells the Godot export how to run the exported game. Because of this, an exported Godot game will always show up as “Godot Engine”. I thought there was a GitHub issue on this, but I couldn’t find it, so maybe it’s been fixed?

If you mean for the Godot editor, then I do not think there is any way to change the name shown in Windows when the Godot editor is open. To be honest, I don’t have a lot experience on this, so it might be different.

Someone else might know better on all this though, it has been awhile since I’ve needed to change the name and/or export a Godot project.

Not that I have ever looked into it but I guess you could try modifying the export templates and rebuild perhaps?

I solved it, in Project ->Export -> File Description. I guess that is the string it uses for the task manager on windows 10.